Refereed/Peer-reviewed Issued as monographic series, -1991; irregular journal, 1995- Vols. for -1991, with analytic titles, cataloged as monographs in LC. Issues for 1995- also called: 2. etapa. Issued by: Centro de Investigación y Acción Social, -1975; Centro de Investigación y Educación Popular, 1976- Description based on: No. 130, published in 1978; title from verso of t.p.